ASTROSAT CZTI

Data Quality Report

Orbit 36205

Creation date: 2022-06-09T08:43:17.750312
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A11_080T02_9000005176_36205cztM0_level2.evt modeM0/AS1A11_080T02_9000005176_36205cztM0_level2_quad_clean.evt
Size (bytes)483,102,72046,941,120
Size460.7 MB 44.8 MB
Events in quadrant A2,803,943280,221
Events in quadrant B3,343,026275,878
Events in quadrant C3,484,347275,693
Events in quadrant D4,653,866231,490

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0350

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114533
B0132192
C0137182
D0172972

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5096100.196232%
B50962264.434851%
C5096711.393250%
D509675114.737049%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7160 5097 3 3 0.04% 0.06%
B 7160 5097 141 141 1.97% 2.77%
C 7160 5097 54 54 0.75% 1.06%
D 7160 5097 721 721 10.07% 14.15%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 83 175850 1462.37 596 584 119.9
A 15 223 146748 1219.55 596 584 119.9
A 8 144 127105 1055.65 596 584 119.9
B 5 172 743781 6619.76 589 573 112.3
B 0 190 176923 1570.75 589 573 112.3
B 15 32 27715 241.75 589 573 112.3
C 4 254 622523 4659.38 579 585 133.5
C 0 10 239539 1790.17 579 585 133.5
C 15 214 233450 1744.56 579 585 133.5
D 10 203 1394378 10333.09 548 531 134.9
D 12 6 648604 4804.4 548 531 134.9
D 13 171 116815 862.06 548 531 134.9

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter